FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\ninaED1
Open Close
General Information
Symbol
Dmel\ninaED1
Species
D. melanogaster
Name
FlyBase ID
FBal0046168
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Amino acid replacement: S137F.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Nucleotide change:

C19887558T

Amino acid change:

S137F | ninaE-PA

Reported amino acid change:
Comment:

Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.

Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 1 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 1 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

ninaED1/+ photoreceptor cells show a massive membrane buildup in addition to a large accumulation of endoplasmic reticulum.

ninaED1/+ retinas show degeneration: a subset of rhabdomeric loss and phagocytosis by neighbouring cells.

ninaED1/+ mutant flies exhibit retinal degeneration, with a significant decrease in the number of photoreceptor neurons in adults after 30 days of light exposure; and these flies exhibit impaired positive phototaxis at 12 days after light exposure, but no defects in geotaxis, as compared to wild type.

ERG recordings demonstrate homozygotes and heterozygotes lack the prolonged depolarising afterpotential (PDA). Heterozygotes lose the deep pseudopupil by 21 days of age, homozygotes and transheterozygotes with ninaED2 retain the pseudopupil structure for much longer. Light enhances the rate of retinal degeneration in heterozygotes.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressed by
Statement
Reference

ninaED1 has abnormal neuroanatomy | adult stage phenotype, suppressible by TER94[+]/TER9426-8

ninaED1 has decreased cell number | adult stage phenotype, suppressible by TER94[+]/TER9426-8

ninaED1 has abnormal phototaxis | adult stage phenotype, suppressible by TER94[+]/TER9426-8

Other
Phenotype Manifest In
Suppressed by
Statement
Reference
NOT suppressed by
Statement
Reference
Suppressor of
Statement
Reference

ninaED1 is a suppressor of phenotype of norpAP24

ninaED1 is a suppressor of phenotype of rdgC306

Other
Additional Comments
Genetic Interactions
Statement
Reference

Scer\GAL4ninaE.PTa-mediated expression of Arf72AGD6768 greatly reduces abnormal membrane buildup of ninaED1/+ photoreceptor cells, although the endoplasmic reticulum-like membrane accumulation remains.

Scer\GAL4ninaE.PTa-mediated expression of Arf72AGD6768 suppresses the retinal phenotype of ninaED1/+ by delaying the degeneration of rhabdomeres and ommatidial structures.

The overall size of aged ninaED1/+ cells that also express Arf72AGD6768 under the control of Scer\GAL4ninaE.PTa is often greatly reduced.

TER9426-8/+ partially suppresses the retinal degeneration, loss of photoreceptor neurons and fully suppresses the defective phototaxis seen in ninaED1/+ mutant flies.

The heterozygous genotype does not prevent the accumulation of endoplasmic reticulum (ER) in photoreceptor cells present in ninaA2 flies.

Xenogenetic Interactions
Statement
Reference

Expression of BacA\p35GMR.PH delays the degeneration of the retina in rdgB5 flies, but does not prevent it.

Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (11)